Automatic paint striper



May 10, 1938. K. v. EKLOV AUTOMATIC PAINT STRIPER Filed June 24, 1937 2 Sheets-Sheet l My v NTOR. BY

W ATTORNEY.

May 10, 1938. K. v. EKLOV AUTOMATIC PAINT STRIPER Filed June 24, 1937 2 Sheets-Sheet 2 Z, l l I ll] ATTORNEY.

W w/w Patented May 10, 1938 UNITED STATES AUTOMATIC PAINT STRIPER Karl V. Eklov, Detroit, Mich.

Application June 24,

Claims.

This invention relates to apaint striping device, and is an improvement of my former stripers set forth in Patent No. 1,992,744, issued Feb. 26, 1935, and No. 2,021,230 issued Nov. 19, 1935.

The object of my invention is to produce a paint striping device that is adapted for both vertical and horizontal striping, by simple adjustment of the striping unit position, and without removing the paint from the container.

Another object is to provide a universal striping device having interchangeable striping nibs, removable without dis-assembling the device, and without leakage through the paint channel.

A further object is to produce an automatic striping unit provided with position indicator for showing the true instrument position normal to the painting surface.

A still further object is to produce an automatic paint striper that is simple in construction, easily and efiiciently operated and that can be manufactured at a very low cost.

These several objects are attained in the preferred form by the construction and arrangement of parts more fully hereinafter set forth.

Similar parts on all drawings are marked by similar numerals or letters.

Fig. 1 is an elevation of the striping device showing the general arrangement of the section units.

Fig. 2 is a top view of the striper showing the relative position of the various operating parts.

Fig. 3 is an end view of the striper, as indicated by the line 3-3 of the Fig. 1, showing the striping nib and guide units mounted thereon.

Fig. 4 is the opposite end view showing the relative position of the paint container mounted on the barrel casing.

Fig. 5 is a cross-sectional view taken on the line 5-5 of the Fig. 1, showing the striper plunger 0 and paint channel therethrough.

Fig. 6 is another cross-sectional view taken on the line 6-6 of the Fig. 1, showing the rectangular nib recess formed therein.

Fig. '7 is a vertical sectional view lengthwise 45 through the striper unit, taken on the line 'l'l of the Fig. 2,. showing the general structure and the operation of the interior parts.

Fig. 8 is a top detail view of the striper plunger shown in the Fig. 7, showingthe special paint 50 passage and ports formed therethrough.

Fig. 9 is a sectional View lengthwise the detachable paint striping nib as taken on the line 9-9 of the Fig. '7, showing the interior construction and roller striper mounted therein.

Fig. 10 is a partial elevation view of the striper 1937, Serial No. 150,127

(01. 91-eao) showing a modified nib recess across the inner end thereof, adapted for multiple nib units.

Fig. 1.1 is a sectional view lengthwise a modified detachable nib, as taken on the line ll--ll of the Fig. 10, showing the multiple roller nib construction.

I will now describe more fully the detail construction of my device, referring to the drawings and the marks thereon.

The casing i is made an elongated metal body section, preferably of cylindrical cross-section, and formed with a cylindrical plunger recess 2 nearly the entire length thereof, positioned concentric with the casing axis. The recess 2 is closed at the outer end by a bearing ring 3 fixedly and securely mounted therein, and is also formed with a shallow rectangular nib recess 4 in the opposite casing end. On the top casing wall, near the center, is mounted a tubular paint container 5, preferably formed as an integral part thereof, and positioned at an angle with the casing axis, extending over the outer casing end. The paint container 5 opens into the casing plunger recess 2 through the restricted port 6 formed through the intervening wall. The outer upper end of the paintcontainer is threaded and provided with a screw closing cap i mounted therein, removable for filling the container 5 with liquid paint before using. Through the center of the cap 1 is formed a secondary threaded opening a which carries a threaded vent cap 8* adjustably mounted therein. The vent cap 8% is hollow and is provided with a small vent port b through one side thereof, closable when said cap is tightly screwed in the recess a, but which may be so adjusted as to allow proper air passage within the container chamber.

Within the casing recess 2 is fitted a cylindrical striper plunger 8, slidably mounted therein. The plunger 8 is formed with threaded shouldered sections 0 and d on opposite ends thereof, and is provided with an annular paint groove e and cross-port f near the central body section. A paint passage g is formed in the forward plunger end, concentric with the plunger axis, and extends to and opens into the cross-port f, forming a liquid paint passage therethrough. The plunger shouldered shaft section 0 is mounted through the bearing ring 3, slidable therein, and carries an adjusting cap 9 and lock nut Hi mounted thereon, positioned outside the casing. Also mounted on the shaft section 0, within the casing recess 2, is a compression coil spring ii designed to engage the casing and plunger shoulders for restraining said plunger 8 in an adjusted position within the casing, and with the threaded shoulder section d partially ejected outside the rectangular nib recess 4. The annular paint groove e and cross-port f are positioned on the plunger body 8 slightly in front of the paint container outlet port 6, closing and sealing said port when the plunger is in a free adjusted position, but capable of coinciding with said port 6 when the plunger 8 is slightly depressed against the ,coil spring ll. Threadably mounted on the plunger end section d is a detachable paint striping nib I2. The nib I2 is a hollow rectangular plug body of a size to fit and slide in the casing nib recess 4, open and threaded at one end and provided with a flattened open thin roller housing h at its opposite end. A fine knurled edge paint striping roller I3 is fitted within the thin housing opening and rotatably mounted therein, said roller fitting and contacting the surrounding housing walls sufiiciently to prevent any paint flow therethrough except upon rotation of the striping roller I3. The striping roller l3 may be made of any desired width, depending upon the paint stripe required, and all nibs H! are interchangeable at will of the operator. The nib [2, when securely mounted on the plunger end d, provides stop means for the plunger 8 for proper 1y positioning the groove e and port f directly opposite the container outlet port 6, when said nib is fully depressed in the casing recess 4. The rectangular recess 4 also provides means for retaining the striper nib and roller I3 in its true set position when once assembled. By slightly releasing the adjusting cap 9 on the threaded plunger section 0 so as to eject the nib l2 from the recess 4, said nib can then be easily removed, interchanged, or readjusted to another position within the recess 4 by slight rotation of the plunger for changing the unit for either vertical or horizontal use as desired, and without removing the plunger 8 or causing any paint leakage therethrough. When the multiple striping nib l2, illustrated in Fig. 11, is desired, the casing recess 4 may be modified to a full transverse end slot 54 as shown in Fig. 10, and the multiple nib body may be then extended to any desired width, depending on the number of striping rollers l3 required.

The casing recess 2 and plunger 8 could also be made square, or any other desired shape, if desired, instead of the cylindrical plunger section as shown, provided the nib l2 was first properly fitted and squared therewith, although it would require a complete removal of said plunger from the casing recess whenever a readjustment of position was made. After assembly, the operation would be the same as previously described.

On both the bottom and side casing walls are fixedly mounted threaded guide support screws i5, which carry a thumb clamping nut l6 screwed thereon. Any type, size or design of guide frame I! may be mounted on either of said support screws I5, and adjusted to engage any guiding edge or template positioned parallel to the desired stripe line. The guide frame I! herein illustrated is of special wire formation, and positioned and adjusted for striping along a vertical wall rib A. For horizontal striping, the nib I2 is removed from the recess 4 and rotated to the next quarter, and re-entered therein within the recess. Also the guide frame I! is interchanged to the side support screw IS. The instrument operation is the same in either case.

A three point position indicator I8 is pivotally mounted on the casing Wall, for indicating a normal position to the painted surface. The indicator may be formed in any desired design as may be needed to meet the painted surface wall or template requirements, but is herein illustrated as a ball tipped fork section formed with an elongated central mounting slot is and indicator point m. The indicator frame 18 is pivotally retained in position by the fiat head screw l9 threadedly mounted in the casing wall opening n, on either casing top or side. An adjusting coil spring 20 is also mounted within the slot k, positioned to extend the indicator frame beyond the striper nib end. When the fork ball tips 1) engage the painted wall or guiding surface, either ribbed or flat, the indicator point m will be positioned over the zero line 1' for the normal striper position, and which is required for a perfect stripe line formation.

The operation of my device is obvious from the foregoing description, and is accomplished by first removing the detachable cap 1 and filling the paint container. The striper may be then held firmly in the operators hand, in a horizontal position, placing the striping nib wheel it against the surface to be striped. depressing the nib and plunger sufficiently to open the port f, and move the device in the desired direction. The indicator l8 will readily readjust against the spring 20, indicating the normal instrument position, necessary for producing a perfect stripe line.

It is apparent that my device is subject to various modifications in both structural design and detail without departing from the spirit of my invention, and I not only claim the striper herein illustrated, but any modification thereof that is substantially a substitution of parts and units herein shown and described.

Having fully described my automatic paint striper, what I claim as my invention and desire to secure by Letters Patent is- 1. A paint striper adapted for making fine stripe lines on painted surfaces, comprising a straight elongatedcasing section provided with a plunger recess nearly the entire length thereof and with one open recessed end, a paint container provided on the top casing Wall, opening into said plunger recess: near the central section thereof, a hollow plunger with annular inlet side ports and detachable end striping nib, slidably mounted Within the casing plunger recess, a plunger restraining spring mounted within the casing recess beneath the plunger for adjusting the plunger position and ejecting the striping nib from the casing end opening, said plunger annular side ports being positioned to coincide with the paint container port opening when the plunger is slightly depressed against the restraining spring.

2. A striping device adapted for making fine stripe lines on painted surfaces, comprising an elongated casing formed with a cylindrical plunger recess nearly the entire length thereof, with one open recessed end, an elongated inclined paint container formed on the top casing wall, integral therewith and provided with an outlet port leading into the central section of the casing plunger recess, a plunger resisting spring mounted in the recess bottom, a hollow cylindrical plunger slidably mounted within the plunger recess positioned to engage the resisting spring and capable of adjustment to slightly project the open plunger end from the casing recessed opening, said plunger being formed with annular grooved inlet ports leading into the hollow plunger chamber, positioned to coincide with the paint container outlet port when the plunger is slightly depressed, and a paint striping nib detachably mounted on the plunger open end, slidable within the casing recessed end opening.

3. A paint striping device adapted for making fine stripe lines on painted surfaces, comprising an elongated cylindrical casing formed with a cylindrical plunger recess nearly the entire length thereof and with one open recessed end, said casing also being formed with an inclined tubular paint container on the top casing wall, integral therewith, and provided with an outlet port opening into the central section of the plunger recess, a plunger resisting spring mounted in the recess bottom, a hollow cylindrical plunger with one open end slidably mounted within said plunger recess and engaged with the restraining spring, adjusting means mounted on the inner plunger end for positioning said plunger with its open end partially ejected from the casing recessed end opening, said plunger being formed with an annular grooved wall ports leading into the plunger hollow chamber and positioned to coincide with the paint container outlet port when the plunger is slight- 1y depressed against the restraining spring, and a paint striping nib detachably mounted on the open end of said plunger, slidable and interchangeable within the casing recessed end opening.

4. A paint striping device comprising an elongated casing formed with a cylindrical plunger recess nearly the entire length thereof, one recess end being open and formed with a rectangular end opening, said casing also being formed with a closable inclined tubular paint container on the top casing wall, integral therewith, and provided with an outlet port opening into the central section of the casing recess, a plunger restraining spring mounted in the recess bottom, a hollow cylindrical plunger slidably mounted Within the plunger recess positioned to engage the restraining spring, an adjusting screw with nut mounted on the inner plunger end for adjusting the plunger position within said recess, said plunger being formed with an annular groove and cross-ports opening into the hollow plunger chamber, positioned to coincide with the paint container port when the plunger is slightly depressed against the restraining spring, a roller tipped paint striping nib detachably mounted on the open plunger end, slidable and interchangeable within the casing rectangular end recess, and guide means adjustably mounted on the casing wall for guiding the striper movement.

5. A paint striper adapted for making fine stripe lines on painted surfaces, comprising a straight elongated casing formed with a cylindrical recess nearly the entire length thereof and with one open rectangular recessed end, said casing also being formed with an inclined tubular paint container on the top casing wall, integral therewith and opening into the plunger recess through a centrally positioned wall port, a restraining spring mounted in the plunger recess bottom, a hollow cylindrical plunger slidably mounted within the plunger recess capable of engaging said restraining spring, screw adjusting means mounted on the inner plunger end for adjusting the plunger position within the recess, said plunger being formed with annular port groove and cross-ports positioned to coincide with the paint container outlet port when the plunger is slightly depressed against the restraining spring, a roller tipped paint striping nib detachably mounted on the open plunger end, slidable and interchangeable within the casing rectangular recessed end, and an adjustable position indicator pivotally mounted on the casing wall capable of contacting the painted surface as the striper unit is moved thereover.

KARL V. EKLOV. 

